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Literature survey

About: Literature survey is a research topic. Over the lifetime, 15372 publications have been published within this topic receiving 459196 citations.


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Journal ArticleDOI
TL;DR: Patterns in antipredatory selection from high to low latitudes and altitudes, from fresh to salt water, and from Paleozoic to Recent time, and accord with previous evidence and predictions are revealed.
Abstract: The theory of evolution by natural selection requires the recognition of aptations. A given genetic variant can be shown to have an advantage over another with respect to an individual's viability in a given environment if (1) some individuals in the population reproduce after an encounter with the agent of selection for which the variant is believed to be beneficial, and (2) the beneficial variant has a higher frequency among individuals which have survived encounters with the agent than among those which died as a result of the encounter or among those which did not encounter the agent. In the special case of evolution of antipredatory features, unsuccessful predation is a necessary condition. A literature survey of 60 predaceous species reveals that unsuccessful predation is widespread; only 19 of 100 prey species (19%) were attacked in one or more vulnerable size classes with an efficiency (measured after the prey was detected) of 90% or more. The nature and effectiveness of antipredatory defenses can...

391 citations

Journal ArticleDOI
TL;DR: A systematic literature survey aimed at the identification and structuring of research on program comprehension through dynamic analysis is reported on, which offers insight in what constitutes the main contributions of the field and supports the task of identifying gaps and opportunities.
Abstract: Program comprehension is an important activity in software maintenance, as software must be sufficiently understood before it can be properly modified. The study of a program's execution, known as dynamic analysis, has become a common technique in this respect and has received substantial attention from the research community, particularly over the last decade. These efforts have resulted in a large research body of which currently there exists no comprehensive overview. This paper reports on a systematic literature survey aimed at the identification and structuring of research on program comprehension through dynamic analysis. From a research body consisting of 4,795 articles published in 14 relevant venues between July 1999 and June 2008 and the references therein, we have systematically selected 176 articles and characterized them in terms of four main facets: activity, target, method, and evaluation. The resulting overview offers insight in what constitutes the main contributions of the field, supports the task of identifying gaps and opportunities, and has motivated our discussion of several important research directions that merit additional consideration in the near future.

390 citations

Book ChapterDOI
TL;DR: In this paper, the authors investigated the relationship between plant nitrogen limitation and water availability in dryland ecosystems and found that at lower levels of annual precipitation, aboveground net primary productivity (ANPP) is limited primarily by water whereas at higher levels of precipitation, it is limited mainly by nitrogen.
Abstract: We investigated the relationship between plant nitrogen limitation and water availability in dryland ecosystems. We tested the hypothesis that at lower levels of annual precipitation, aboveground net primary productivity (ANPP) is limited primarily by water whereas at higher levels of precipitation, it is limited primarily by nitrogen. Using a literature survey of fertilization experiments in arid, semi-arid, and subhumid ecosystems, we investigated the response of ANPP to nitrogen addition as a function of variation in precipitation across geographic gradients, as well as across year-to-year variation in precipitation within sites. We used four different indices to assess the degree of N limitation: (1) Absolute Increase of plant production in response to fertilization (the slope of ANPP vs. amount of added N at different levels of annual precipitation); (2) Relative Response (the percent increase in fertilized over control ANPP at different levels of N addition); (3) Fertilizer Use Efficiency (FUE, the absolute gain in productivity per amount of fertilizer N), and (4) Maximum Response (the greatest absolute increase in ANPP at saturating levels of N addition). Relative Response to fertilization did not significantly increase with increasing precipitation either across the geographic gradient or across year-to-year variation within sites. Nor did the Maximum Response to fertilization increase with increasing precipitation across the geographic gradient. On the other hand, there was a significant increase in the Absolute Increase and FUE indices with both geographical and temporal variation in precipitation. Together, these results indicate that there is not necessarily a shift of primary limitation from water to N across the geographic water availability gradient. Instead, our results support the hypothesis of co-limitation. The apparently contradictory results from the four indices of N limitation can best be explained by an integration of plant ecophysiological, community, and ecosystem mechanisms whereby plants are co-limited by multiple resources, species shifts occur in response to changing resource levels, and nitrogen and water availability are tightly linked through biogeochemical feedbacks.

388 citations

01 Jan 2006
TL;DR: In this article, the authors present a critical survey of the literature on the resource curse, focusing on three main questions: (i) are natural resources bad for development?; (ii) what causes the Resource curse?; and (iii) how can the Resource Curse be overcome? In respect of these questions, three observations are made.
Abstract: This paper presents a critical survey of the literature on the ‘resource curse’, focusing on three main questions: (i) are natural resources bad for development?; (ii) what causes the resource curse?; and, (iii) how can the resource curse be overcome? In respect of these questions, three observations are made. First, while the literature provides considerable evidence that natural resource abundance is associated with various negative development outcomes, this evidence is by no means conclusive. Second, existing explanations for the resource curse do not adequately account for the role of social forces or external political and economic environments in shaping development outcomes in resource abundant countries, nor for the fact that, while most resource abundant countries have performed poorly in developmental terms, a few have done quite well. Finally, recommendations for overcoming the resource curse have not generally taken into account the issue of political feasibility. More generally, it is argued that the basic problem with the literature is that researchers have been too reductionist – they have tended to explain development performance solely in terms of the size and nature of countries’ natural resource endowments. A consensus is emerging that various political and social variables mediate the relationship between natural resource wealth and development outcomes. But rather than acknowledge that these variables are shaped by a range of historical and other factors in each case, scholars have tended to see them as determined by the natural resource base. Put differently, scholars have been asking the wrong question: rather than asking why natural resource wealth has fostered various political pathologies and in turn promoted poor development performance, they should have been asking what political and social factors enable some resource abundant countries to utilise their natural resources to promote development and prevent other resource abundant countries from doing the same.

388 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the field of the dynamics of cracked rotors is presented, including the modeling of the cracked part of the structure and finding different detection procedures to diagnose fracture damage.
Abstract: Propagating fatigue cracks can have detrimental effects on the reliability of rotating machinery. An early crack warning can considerably extend the durability of these very expensive machines, increasing their reliability at the same time. Vibration monitoring as a means of detecting crack initiation has been receiving much interest. A detailed study of the vibrational behavior of cracked rotating shafts, therefore, is an important problem for engineers working in the area of the dynamics of machines. This article presents a review of the field of the dynamics of cracked rotors, including the modeling of the cracked part of the structure and finding different detection procedures to diagnose fracture damage. The material should be helpful to scientists and researchers working in this area or planning to work in it in the future. Since the study of nonrotating, cracked structural elements obviously is relevant to the cracked rotor problem, the review can also be a basis for discussing the dynamics of cracked beams and columns.

387 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202239
2021987
2020987
2019816
2018799
2017870